hoover



Oct. 4,1927. Re. 16,763.

- H. E. HOOVER SUCTION SWEEPER Original Filed Jan. 2. 192's 4 Sheets-Sheet 1 INVENTO H MJZSZMM AiTOFINEY I SUCTION SWEEPER Originai Filed Jan. 2. 1920 4 Sheets-Sheet s I N v I N T0 R Howard Ear/ H00 ver- H. E. HOOVER SUCTION SWEEPER Original Filed Jan. 2. 1920 4 Sheets-Sheet 4 all/Ill] ll/ ATTORNEY Heretofore, it has been customary to accom- UNITED STATES Re. 16,763 PATENT OFFICE.

HOWARD EARL HOOVER, OF GLENCOE, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE HOOVER COMPANY, OF NORTH C ANTON, OHIO, A CORPORATION OF OHIO.

SUCTION SWEEPER.

Origlnal No. 1,488,977, dated February 19, 1924, Serial No. 348,746, filed January 2, 1920. Application for reissue filed December 14, 1925;1Serial No. 75,459.

at the brush adjusting and driving means.

This may be necessary for purposes of adjustment and repair or in the case of a belt driven brush, to remove-or renew the belt.

lish this 'b providing an opening in. the bottom of t e sweeper casing. In my improved form, I provide a removable bottom 'of floor plate'for the casing. With it removed, the entire interior of the suction chamber with all that it contains, is readily accessible.

In order to clean at a distance from the swee or it is customary to connect a hand tool y means of a converter to the casing and source of suction. For this purpose, it is preferable to have the connection between the tool and the suction source as direct as possible. In the form of my invention the connection is directly with the fan chamber. By such a connection the dust laden air from the suction tool is drawn directly to the fan chamberv and is not passed needlessl over or through the brush or about the suction nozzle or brush chamber. This arrangement is made particularly eflici'ent and convenient by the removable floor plate.

My invention is illustrated more or less diagrammatically in the accompanying drawings wherein:

.Figure 1 is a side elevation ofmy sweepor with parts omitted; v

Figure 2 is a bottom view with brush removed and with parts omitted;

Figure 3 is a vertical section along the Inc 3-3 of Figure 2; V T

Figure .4 is an,.elevation of the floor plate; Fi ure 5 is a bottom view with floor plate and rush removed and one form of converter in place;

Figure 6 is a vertical section along the line 66 of Figure 5 showing amodified form of slotted lug;

Figure 71s a view similar to Flgure 5 ;floor plate A Figure 12 is a vertical section along the.

line 1212 of Figure 11. I

Likeparts are indicated by like characters throughout the drawings. 7 y

A is a suction sweeper casing composed of an upper part A and a lower removable which is mounted a rotary brush A A is a discharge opening through which the dust laden air passes from the sweeper. A is a motor housing mounted upon the casing.

A A are guard fingers mounted in the bar C C are hooks mounted on the floor plate A and adapted to engage the nuts A A.

C -C are lugs mounted on the floor plate.

A and slotted as at C C for engagement with the bolts D which are mounted in and extend laterally from the casing part A D "D are thumb nuts upon the bolts D D provided with the inner cone faces D A is a suction nozzle in adapted progressively to engage the slottedmi lugs C C, and thus to co-operat'e and secure the two parts of the casingtogether.

E is the bottom'of the fan chamber apertured as at E the edges ofythe aperture being beveled as at E E is a converter connection communicating wlth the conduit E. E is a lgart integral with the connec tion E E 6 are lugs similar to the lugs C C and adapted to co operate with the F F on which are mountedlugs F F for co-operation with the bolts D D and thumb nuts D D in a manner similar to the lugs C C. F is a forward extension from-the converter connection F, connected to the conduit E. I

G G are rods'extending laterally from the extension F G G are yokes" mounted on them and adapted to extend-across the suction nozzle. Gr Gr are wheels mounted for rotation on the shafts G G. By means of these wheels and their mountings, the forward end of the casing is supported above the floor and the casing may thus be moved about in the usual manner.-

His a fan mounted in the casingand'pio vided with the extension H whichhas' 'at'its lower end the belt pulley H.

I is a belt driven by the pulley H and adapted to drive the rotary brush A.

J is a further modified form of converter having a widened and flattened portion J This construction is designed to flatten the converter without decreasing the cross sec tional area of the passage through it.

K K are projections extending laterally from and integral with the converter J On them are slotted lugs K K adapted to co-operate with the bolts D D and thumb nuts D D to secure the converter to the.

casing part A. I

Although I have shown in my drawmgs an operative device, many changes might be made in size, shape or arrangement with.-

out departing materially from the spirit of my invention, and I wish therefore, that my drawings'may be regarded as in a sense, diagrammatic.

In Fi ure 6 is shown a modified form of slotted ug. Instead of the usual inclined face ada ted to engage the beveled face of u the thum nut, I have curved the end ofthe by the hooks at eit er end which engage the,"

Erojecting nuts at the pivot points of the rush sulpporting plates. The slotted lugs toward t e rear of the floor plate overlie the bolts extending from the casing and the thumb nuts on the bolts engage and hold' I prefer to make it in one piece.- Its inner the lugs in osition to secure the two parts together. T e co-operation between the slantin ends of the lugs and the inner bevel face of the thumb nuts is such that if they are tightened, the floor plate is progressively .drawn up and held against the casing part A. To remove the plate these I nuts are loosened so as to free the rear end of the floor plate whichl is then 'raised.

The hooks at the forward edge of the late are thus freed and may be disengaged rom the nuts and the plateis then removed from the casing,*thus the whole interior of the. casing and, the belt, brush and brush support are exposed for repair, renewal, or adjustment. Y

After the'floor plate is removed, the application of-any .form of converter is substantially the same. The converter is placed in position, over and extendin into the passageway leading to the fan c amber, and the thumb nuts in the same manner as are those of the floor plate. After these nuts are tightened, the converter is drawn down upon edges of the suction nozzle proper of the [slotted lugs upon it are secured by the.

casing, thus the forward end of the casing is raised above the floor and is supported upon the auxiliary wheels so that the sweeper may be moved fromplace to place in the usual manner.

The third form of converter is attached in a manner similar to the first form. It is, however, flatter, and therefore, takes up less room and the machine itself may be upright I after this form of converter has been applied.

By t he'term' suction chamber, I mean to refer to that chamber which lies near and is connected with the fan chamber and con- .tains that portion of the driving mechanism.

which is'likely to require inspection and care. Forward of the suction chamber is what might-be called an inlet chamber or when the brush is used, a brush chamber.

This chamber, of course, needs no bottom or bottom plate because it is through the bottom of this chamber or portion of the chamber that the dust laden air enters. There might be other than brush drivingmechanisms "which could be contained in the sucsurface practically forms substantially the entire bottom of the suction chamber, and:

is free from obstructions. The brush chamber and the wheel chambers require no cover. The suction chamber must have a bottom whose form is imperforate, although it covers the hole between the fan-and suction chambers. It is removable if necessary to cover: such hole for application thereto of the hose connection.

1. A suction cleaner casing having a fan chamber, a suction chamber, and an inlet chamber havin a mouth, in combination with a removable plate which when in position forms a wall of such suction chamber and a lip of said mouth, the fan chamber having an inlet opening adapted to receive a converter which extends into the suction chamber and connects with said inlet opening when the plate is removed.

2. A suction cleaner casing having a fan chamber, a suction chamber, and an. inlet chamber havin a mouth, in combination with a removab e plate which when in position forms a wall of such suction chamber and a lip of said mouth, the fan chamber having an inlet opening adapted to receive a converter which extends intothesuction chamber and connects to said 'inletopening when the plate is removed, the converter provided with a generally lateral conduit connection chamber.

3. A suction cleaner casing having a fan chamber, and a suction chamber in combie nation with a removable plate, which when in position forms a wall of .such suction chamber, and means adapted to secure said plate to said casing and to draw them prolying in part within the suction gressively closer together, said means including .a slotted spring member on said plate and a co-operating pin member on said casing, said slotted member provided with. faces angular to the axis of said pin member-and a movable securing member on .SELlCl pin member provided with an mwardl beveled face for co-operation with the face of said slotted member whereby said plate is drawn progressively against said casing. .4. A suction cleaner casing having a fan chamber and a suction chamber, there being provided in the wall therebetween an opening, in combination with a removable plate which when in position forms an entire wall of such suction chamber, and means adapted .to secure said plate to said casing and to draw them progressively together, said means including slotted members on said plate and co-operating pin members on said casing, the opening in the wall between the fan and suction chambers being adapted to receive a converter which enters the suction chamber and connects with the fan chamber when the late is removed and attaching means on said converter adapted to co-operate with said pin members to secure said converter to said casing.

5. A suction cleaner casing having a fan chamber and a suction chamber, in combination with a removable plate which when in position forms a wall of such suction chamber, the fan chamber having an intake adapted to receive a converter which enters the suction chamber when the plate is re- 'moved and ivconnectingwith the fan intake,

said converter provided with a conduit connection in combination with a supporting frame adapted to contact and support the forward end of said casing, widely separated wheels mounted on said frame and adapted f to contact the floor beneath said casing.

6.1QA suction cleaner casing comprising a fan chamber and a suction chamber with an openingtherebetween, and an inlet mouth, a detachable imperforate plate which formsa wall of the suction chamber and an edge of the inlet mouth and which overlies the openmg between the fan chamber and suction chamber, said plate provided with a relatively smooth and unobstructed upper face {)oform thelower wall of the suction cham- 71A converter attachment for a vacuum open bottom member integral therewith and formed by '9. depending outwardly flared gall terminating forwardly in an inlet cham- 9. In a suction cleaner casing, a cast metal fan chamber having an inlet opening, a col lecting nozzle having its to side integral with said fan chamber and its bottom side formed with an open channel which communicates with said opening, and a bottom plate detachably secured to said nozzle and completing said channel.

10. In a suction cleaner casing, a cast metal fan chamber having integral therewith the top, sides, and forward li of a collecting nozzle in combination with a separately formed bottom plate which completes said nozzle and has an edge spaced from said first lip to define an inlet mouth, the opposite part of the nozzle interior communicating with the interior of said fan chamber.

Signed at Chicago, in the county of Cook,

' nowann EARL HOOVER. 

